CN103313890B - Monitoring brake device and parts associated with it - Google Patents
Monitoring brake device and parts associated with it Download PDFInfo
- Publication number
- CN103313890B CN103313890B CN201080071113.0A CN201080071113A CN103313890B CN 103313890 B CN103313890 B CN 103313890B CN 201080071113 A CN201080071113 A CN 201080071113A CN 103313890 B CN103313890 B CN 103313890B
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- Prior art keywords
- brake
- bar
- change
- path
- monitoring
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- 230000003068 static effect Effects 0.000 description 4
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/28—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for testing brakes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/08—Brake-action initiating means for personal initiation hand actuated
- B60T7/085—Brake-action initiating means for personal initiation hand actuated by electrical means, e.g. travel, force sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
- F16D65/60—Slack adjusters mechanical self-acting in one direction for adjusting excessive play for angular adjustment of two concentric parts of the brake control systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
- F16P1/00—Safety devices independent of the control and operation of any machine
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
- G05G1/04—Controlling members for hand actuation by pivoting movement, e.g. levers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D2066/003—Position, angle or speed
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20576—Elements
- Y10T74/20582—Levers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/21—Elements
- Y10T74/219—Guards
Abstract
The present invention relates to the monitoring device of the value of the actuator stroke for detecting the thrust component (31) indicating brake actuators and/or release stroke, this thrust component (31) is by the bar (1 of this brake actuators；34) activating, this monitoring device includes the sensor (12 of the change of at least one of physical characteristic for sensing this brake actuators；19；22；27；37), thus this sensor (12；19；22；27；37) it is arranged to by this part of this brake actuators and this sensor (12 with this part of this brake actuators；19；22；27；37) relative motion between produces and senses the path (10 along this relative motion；17；20；28；35) this physical characteristic repeat change.This path (10；17；20；28；35) this bar (1 it is formed at；34) with this bar (1；34) between neighbouring stationary part.The present invention is not only for drum brake but also for disk brake.
Description
The present invention relates to wait to be used in different types of stopper mechanism (brake mechanisms)
Monitoring brake device.Further, the present invention relates separately to include that such monitoring brake fills
The drum brake (drum brake) put and disk brake (disc brake).The present invention
Also contemplate the brake actuators (brake cooperated with such monitoring brake device
Actuating mechanisms) if dry part.
In vehicle brake, during brake actuating, at least one rotor being connected with wheel
It is applied to the friction element braking of this rotor.In drum brake, brake-shoe (brake
Shoes) radially and tangentially moving towards going barrel, described brake-shoe is arranged in this drum,
And stretch by the S-cam (S-cam) fixing to be connected with an axle, this axle is driven by a bar
Make rotation.
In a certain disk brake, it is at least one thrust component (thrust element)
The brake block (break pad) of end is pushed to this brake disc, and this thrust component is activated by bar.
In this two classes stopper mechanism, actuator all can use pneumatic, hydraulic pressure or electric principle.
Bar will be applied to the S-cam axle (S-scam shaft) of drum brake or is applied to dish
The thrust component of formula brake, and as soon as the brake that brake actuating just causes these parts causes
Dynamic stroke (brake actuation stroke), thus these parts at this actuator with on the contrary
Release stroke during the release of direction is generally supported by spring return mechanism.
In drum brake, such brake actuating stroke is to be rotated to by brake-shoe
The inner surface radial direction of brake drum assemble and finally engage and perform.At disk brake
In, this stroke is performed by thrust component, this thrust component court the most linearly
This brake disc shifts.In other words, brake actuating or release stroke are by containing brake lining
The parts of the brake actuators of (break lining) perform, and corresponding to these portions
Part is the distance of energy process in direction of actuation and release direction.
Accordingly, big stroke can be shown that arrestment mechanism has certain fault.The reason causing excessive stroke can
Can be: the excessive abrasion of the liner of defective automatic slack adjuster, brake block or brake-shoe,
Or any other reason.
Too short stroke may alternatively appear in, such as, when activated cylinders does not works or when brake is because resetting
Mechanism-trouble and suitable upon release.
Therefore, for safety, need to monitor in some way and detect brake actuating and/or
Release stroke, because excessive stroke shows: or on the one hand include the brake of actuator mechanism
There is fault in actuating mechanism, or on the other hand needs to change the brake lining of abrasion, additionally, because of
Stroke for shortening shows that activated cylinders or resetting-mechanism exist fault.
At present, in the prior art, three different measuring principles are employed for this purpose.
Such as, when this stroke is beyond predetermined length, some indicator may be to driver or
Advanced control system (ACS) provides alarm signal.Such indicator is often based on by magnetic or machinery
The switch controlled.Although these indicators are proved to be the most cost-effective, but such monitoring
Device install and maintenance time need suitable regulation, this then add cost.
Another principle relates to detecting in esse stroke.For such quantitative detecting method
Sensor provides with good accuracy reflection linear course (disk brake) or angle stroke (drum
Formula brake) signal.But, when only should determine that excessive stroke, such sensor is demonstrate,proved
Bright the most expensive.
The example of this existing monitoring system can be from such as US 5,433,296 or US 7,398,141
B2 sees.
3rd principle relates to measuring different braking block or the actual gasket wear state of brake-shoe.For
The sensor of this purpose is mainly used together with complicated brake control system, the braking of this complexity
Device control system is applied in dynamic vehicle control system, maintain an equal level on automobile different braking device it
Between gasket wear.Additionally, it is believed that be monitored stroke this simple task meeting with this sensor
Prohibitively expensive.
The example of this existing monitoring system can be from such as US 5,339,069 or US
2009/0050418 A1 or DE 195 34 854 A1 sees.
For the sake of major part security purpose, and the most even encouraged by governmental authority, with specific near
Monitor brake actuating stroke like degree of accuracy (its do not provide definite actual stroke value) to be sufficient for
, i.e. provide physical presence stroke qualitative and non-quantitation instruction may be sufficient to.
Based on above, it is an object of the present invention to provide the simple braking for stopper mechanism
Device monitoring system, this brake monitoring system works in reliable and efficient mode, the most cost-effective
It is easily installed again.
Such purpose a kind of monitoring brake device provided by the present invention realizes.And, this
The purpose of sample is respectively by including the drum brake of described monitoring brake device and including described system
The disk brake of dynamic device monitoring device realizes.If the dry part of brake actuators is (such as
Brake bar, control arm and lid) be newly designed with the solution helping the problems referred to above.
The invention provides a kind of monitoring brake device, indicate brake actuating machine for detection
The actuator stroke of the thrust component of structure and/or the value of release stroke, described thrust component is by described system
The bar of dynamic device actuating mechanism activates, and described monitoring brake device includes for sensing described brake
The sensor of the change of at least one of physical characteristic of actuating mechanism, the most described sensor and
The described part of described brake actuators is arranged to by described brake actuators
Relative motion between described part and described sensor produces and detects described physical characteristic edge
Described relative motion path repeat change, the most described path be formed at described bar with institute
State between the neighbouring stationary part of bar (stationary part), i.e. along described bar with described
One of stationary part that bar is neighbouring.
Accordingly, it is configured according to the sensor in the monitoring brake device to be used in of the present invention and pacifies
Row is, activates or in the time span of brake release at a normal brake application device, with impulse form
Count these numbers repeating change.Limit in advance for corresponding time span if pulse number exceedes
Fixed presetting pulse number, or fall the presetting pulse number limited in advance for corresponding time span
Hereinafter, being generated as alarm signal, this alarm signal is provided to driver or advanced control system (ACS).
It is therefore not necessary to accurately detect relevant physical quantity, fill at the monitoring brake according to the present invention
It will be the simplest for putting middle use and can distinguish the sensor of two amounts fully differentiated.Accordingly, treat
It is used in the sensor element in monitoring brake device and must only have simple sensing arrangement, and therefore
To be cheap.
Additionally, the present invention to stay in of sensing principle realized in monitoring brake device special excellent
Point is not require any reference point so that without repeating the path of change strictly relative to described
Install and regulation sensor.And, the electrical adjustment in advanced control system (ACS) or its software becomes
Non-essential.Thus, install and overhaul and will become easier to and more cost-effective.Additionally, according to
The system of the present invention can eliminate a kind of associate with non-precision location and installation possible fault mode (as
Know from other more accurate measuring principles).
Be selected from such as following parameters for the described physical characteristic repeating change: magnetic field, resistance,
Electric capacity, inductance and/or surface texture etc..
Preferably, described change is repeated along described path uniformly and be equally spaced.
According to the present invention, described in surface texture is repeated change and includes geometry (geometry)
Change.Such change along described path can include a series of depression (recesses) or
Groove (slots) or tooth (teeth).Static relative to described according to described monitoring brake device
The installation site in portion, described path can be arc (arc-shaped) or linear
(linear)。
In a preferred embodiment, the parts including described path are metals, and at least one
Individual magnet be arranged at described repeat change near, with according to described repeat to change produce change
Magnetic field intensity.Described magnet generates magnetic flux in the metal material portion in described path, such as,
In described tooth (or in the fragment between described groove), but in the depression between described tooth (or
In described groove) do not generate magnetic flux.Therefore, magnetic flux have been focused into described repeat change
In material portion, and thus obtained magnetic field can be measured.Accordingly, magnetic sensor has counted and has had
The change in the magnetic field near the groove repeated or the path of tooth.
Preferably, described magnet and described magnetic sensor are arranged at self-contained type's shell
In (self-contained housing), described shell accordingly can be relative to described path orientation.
Alternatively, described path may also comprise a series of permanent magnet, and described permanent magnet is by by correspondence
Sensor detects.
For this arrangement, described repeat change or can be arranged at described bar or be arranged at from
At a part for standby formula bar assembly (level assembly), and described sensor can be arranged at
With at the described stationary part that described bar is neighbouring, or described repeat change and be arranged at described bar is adjacent
At near described stationary part, and described sensor is arranged at described bar or is arranged at self-contained type
At a part for bar assembly.
Additionally, in this respect, described repeat change and can be formed and described bar (or self-contained type's bar
The described part of assembly) or with the neighbouring stationary part of described bar integral.Alternatively, described heavy
Multiple change can by bar to be attached to described (or described part of self-contained type's bar assembly) or be attached to
The discrete component of the stationary part that described bar is neighbouring is formed.Such discrete part can be to include one
The metallic plate (plate) of the linear or arc of series of grooves or tooth or permanent magnet or bar (stripe),
And the appropriate section treating to form the both parts in this path betwixt will be attached to.
Such as, in the case of this monitoring brake device is used in disk brake, with this bar
Neighbouring stationary part can be a part of slide calliper rule (caliper)；Or at this monitoring brake
In the case of device is used in drum brake, with the stationary part that this bar is neighbouring can be vehicle
A part for undercarriage portion (underframe part), such as anchor rack (anchor bracket).
Brake assembly generally includes the automatic slack adjuster for compensating gasket wear
(automatic slack adjusters).According to the present invention for monitoring brake device
Sensor first should be mounted and be configured to only just to sense this brake group when brake actuating
Relative traveling relative to each other between parts in part.But, as already mentioned above, answered
Sensing principle do not require any reference point.Therefore, this sensor also may be mounted to that this braking
In the parts advanced in brake actuating stroke and in gasket wear compensates in device assembly.
For this situation, according to another advantage is that of the monitoring brake device of the present invention, it is not required that volume
Outer detection brake status, i.e. no matter whether braking is applied in.
For latter purpose, it is advantageous to use somewhere near described path ends to generate and have
The means of the pulse of additional strength (such as double strength), alert driver or AS:
Total kilometres have reached to reflect the value that the liner of brake block or brake-shoe is the most completely worn out.Accordingly, institute
State the path repeating to change and include at least one additional irregular change, be used for determining actuator stroke
And/or the particular location of release stroke, described particular location represents critical gasket wear state.
Additionally, such irregular change is used as uncommon ultra-long-stroke, (it will threaten
Safety) instruction.By such simple principle, advanced control system (ACS) need not rely exclusively on its
The software monitors algorithm write for this event.
As understood from described above, generally it is proved to according to the monitoring brake device of the present invention
It is the simplest and cost-effective.Its work is reliable, because being required for the calculation of complexity
Method is used for signal processing.Described monitoring brake device can use with various actuator, and can
It is installed in various types of vehicles, from passenger vehicle to load-carrying vehicle (such as truck, bus and trailer).
Owing to the most simply sensing principle, it is not necessary to specify the exact amount of pre-determined size can be just driver or
Control system instruction brake stroke and release stroke, beyond pre-determined size, install root on a large amount of vehicles
Will assist according to the monitoring brake device of the present invention and generally improve road safety.
The invention still further relates to include the drum brake of monitoring brake device as above.
In drum brake, one end of brake bar is installed to S-cam axle, and another free end
It is connected to brake cylinder (brake cylinder), as is well known in the art.Institute
Stating the opposite of one end that the piston with described brake cylinder of bar is connected, described bar includes shell, described
Shell accommodates automatic slack adjuster, and described automatic slack adjuster is connected to self by miscellaneous part
Described S-cam axle.Described automatic slack adjuster requires for realizing its function with reference to controlling letter
Number.This reference is provided by control arm, and the side (typically by anchor rack) of described control arm is regularly
It is connected to the fixing point on described floor underframe for vehicle, and the opposite side of described control arm is pivotally connected to
Described brake bar.
Described anchor rack is used as reference, exists measuring the automatic slack adjuster of described drum brake
Angle stroke (angular travel) in one brake application cycle so that described automatically
Slack adjuster can regulating brake liner (i.e. brake-shoe) to adapt between the drum caused by abrasion
Gap.At least side of described shell is by closed with covers, and described lid is generally by the lamellar gold of particular form
Belong to (sheet metal) to make.
According to one embodiment of the invention, in drum brake, the lid of described shell includes
For the described path repeating change, and described sensor is attached to described control arm.
Owing to described lid is made up of sheet metal, so it is an advantage of the current invention that at described
In the manufacture process of shape metal, via die-cut (punching), punching press (stamping) and curved
The repeating change and can be arranged on described lid of folding (bending) etc., groove or tooth pattern
Relevant position.Preferably, it is positioned at described system with the described path repeating change as a half-turn
The opposite of the free end of lever.Owing to described control arm is fixed to described floor underframe for vehicle, so institute
State control arm and keep static, and described bar rotates relative to described control arm.Accordingly, as soon as described
Bar is braked device and activates and brake released movement, and the repeating of the lid of the shell of described bar just changes
To advance back and forth relative to the sensor being attached to described control arm.The design of described sensor is this
Sample: its shell can be clipped to described control arm by corresponding retaining element.Described shell can both comprise
Described sensor comprises again described magnet, and if being suitable for the electronic device that also can comprise correspondence.
In one embodiment, the lid of described shell includes series of grooves in the plane on its surface
Or tooth.But, it is possible to row, the described arc repeating to change the free end opposite being positioned at described bar
On the downside of shape (underside), i.e. it is perpendicular to described lid, curved path the most for this purpose
Or can integrally be provided with described lid, or can be attached as the arch-shaped elements being discretely formed
To the downside casting bar.It is desirable that this element includes a series of depression or groove.Also it is possible that
Described repetition changes (such as tooth) and described bar one, is cast in the downside of described bar.
Also it is possible that described sensor is attached to the lid of described shell, then described control arm bag
Include the described path repeating change.For this purpose it is proposed, the shell of described sensor will be arranged at described control
The top of arm processed, and described a series of tooth or groove will be arranged at described control arm as an arc
On upper half-turn.
For both of these case, it is clear that the lid of described shell or integrally comprise described duplicate paths
Control arm can manufacture in common die-cut and punch steps easy and cost-effectively.
Accordingly, the invention still further relates to a kind of brake bar for drum brake, described drum brake
Device includes the such path for repeating change of monitoring brake device.
Additionally, the present invention relates to a kind of disk brake, described disk brake includes as mentioned above
Monitoring brake device.
In disk brake, the bar pivotally supported in clamp (caliper) activates at least
One thrust component, described thrust component is guided in described clamp displaceably, as soon as braking
Device activates and just moves towards described brake disc, as known in the art.Described thrust component can
To be horizontal bar (cross bar), single tappet (single tappet) or the like.
According to the present invention, the brake bar for disk brake includes the path repeating change, preferable
Ground is on its side surface (lateral surface).Described sensor is positioned at described clamp,
Correspondence position in the region of bar supporting.
Generally it is cast due to described brake bar or is forged and made one piece, repeated change so described
A series of indenture (dents) can be made in casting or Forging Technology.Alternatively, permanent magnet
Described side surface can be fixed to.On described brake bar, described repeat change and define an arc,
Described arc answers the rotation of described bar to skim over (travels over) and be still in the biography in described clamp
Sensor.
Accordingly, the invention still further relates to the brake bar for disk brake, described brake bar includes this
The path repeating change for monitoring brake device of sample.
The present invention for drum brake and disk brake has advantage at some aspects.
The sensing principle of simple count pulse and the pulse number counted is entered with preset limit
Row does not more require the signal processing formula of complexity, therefore can use cheap electronic device.
One major advantage is, it is attached that described monitoring brake device will be arranged at described brake bar
Closely, or be directly arranged at described brake bar or on described brake bar, the sensor therefore used
Element is not exposed to the high temperature occurred near described brake drum and described brake disc respectively.
Such as, in drum brake, if described sensor element is positioned at described brake drum,
The most described sensor element and cable thereof will need high temperature specification.If because of certain in described brake drum
Brake fault and high temperature occurs, the most described sensor element and cable thereof would detract from bad wind
Danger.
The identical problem about heat is set up the most in a similar fashion for disk brake.
For drum brake and disk brake, monitoring brake device is pacified according to the present invention
The method in the region coming bar is all proved to fix at space requirement, assembling, cable, check and examine
Repair aspect the most complicated.
As one example only, when described sensor is placed in described brake drum, checks and examine
Repair the monitoring brake matching requirements with sensor element and remove described brake drum.
For the application in drum brake and disk brake, physical characteristic repeats the road of change
Footpath can be arranged and be positioned on bigger radius, owing to less space limits, this then make
It is capable of preferably sensing resolution, the most uncomplicated thus can use less expensive
Sensor element.
Additionally, when described repetition change application is in the brake bar of drum brake, it was demonstrated that by tooth or
Groove is arranged at control arm or is arranged in ratio at the lid of shell and is arranged in S-cam the tip of the axis
This is the lowest, because the part of stamped and punching that these parts are made up of sheet metal, thus one
Denier instrument is made, forms tooth or groove would not cause fringe cost.At described S-cam axle
The similar measure of end or need the discrete dish (separate of S-cam axle to be fixed to described
Or need more complicated thus more expensive processing or the forging of described S-cam axle disc),.
One special benefits of the monitoring brake device according to the present invention is about repacking
(retrofitting).Existing brake bar can be replaced by easily is furnished with corresponding biography
The bar of sensor component.On all kinds of new vehicles, described brake bar can be additionally with insignificant cost
Be furnished with the path repeating change, such as by providing toothed control arm, then additional sensor unit
Part only needs the later stage to install simply on automotive line.
From combining the accompanying drawing explanation to different embodiments, other advantages and embodiment become bright
, in the accompanying drawings:
Fig. 1 shows the brake lever assembly for drum brake according to prior art and master thereof
Want parts；
Fig. 2 shows the brake prison being attached to the bar for drum brake according to the present invention
Survey device；
Fig. 3 shows according to sensor of the invention；
Fig. 4 shows the brake prison being attached to the bar for drum brake according to the present invention
Survey device；
Fig. 5 shows the brake prison being attached to the bar for drum brake according to the present invention
Survey device；
Fig. 6 shows the brake prison being attached to the bar for drum brake according to the present invention
Survey device；
Fig. 7 shows the brake prison being attached to the bar for drum brake according to the present invention
Survey device；
Fig. 8 shows the profile of disk brake principle；And
Fig. 9 shows the monitoring brake device for disk brake according to the present invention.
As an example, Fig. 1 shows the self-contained type's brake bar group for drum brake
Part, commonly uses as in prior art.
Bar 1 is made of cast iron, and includes that top bar segment 2, top bar segment 2 are attached to hydraulic pressure or gas
Piston rod (piston rod) (not shown) of pressure actuating cylinder.Top bar segment 2 extends downwardly into
In bottom bar segment 3, bottom bar segment 3 is with shell 4, and shell 4 accommodates automatic slack adjuster mechanism 5
(being illustrated partly by the end of the worm screw (worm screw) of described mechanism).
Slack adjuster mechanism 5 includes worm and worm wheel (not shown) and miscellaneous part, this worm gear
It is connected with S-cam axle (not shown) via the opening 6 in shell 4, such as institutes many in prior art
Known.About configuration and more overall informations of function of such automatic slack adjuster, ginseng
DE 195 34 854 A1 as previously mentioned as usual.
Shell 4 is closed at its lid 7 that at least side is made up of sheet metal.
Additionally, the automatic slack adjuster mechanism 5 of bar 1 is connected to control arm 8, control arm 8 is attached
It is connected to the adjacent undercarriage portion (such as anchor rack 9) of vehicle, thinks that automatic slack adjuster mechanism 5 carries
For reference.
Fig. 2 shows an exemplary embodiment party of monitoring brake device according to the present invention
Case.
The lid 7 of shell 4 includes curved path 10 in the end opposed with top bar segment 2.Road
Footpath 10 is all integral with lid 7 in the both sides of shell 4.
Path 10 include physical characteristic repeat change, this physical characteristic is by geometric element (i.e.
Series of grooves 11) formed, these grooves are equally distributed on around curved path 10.
Sensor element 12 is fixed to control arm 8 by retaining element (such as clip 13).
As being apparent from from Fig. 2, during brake actuating or brake discharge, work as band
The rotation of bar 1 is answered and during pass over sensor element 12 in the path 10 having groove 11, sensor element
12 keep static.
According to the present invention, sensor element 12 is configured to calculate the number of groove 11, thus generates
Corresponding pulse.
Sensor element 12 can be any kind of sensor being suitable to calculate the number of groove 11.
Most preferably, sensor element 12 is magnetic sensor, its can detect by groove 11 repeat change
The changes of magnetic field caused, as shown in Figure 3.
Sensor element 12 is formed by self-contained type's shell 14, and it is (all that shell 14 is embedded with magnetic sensor 15
Such as at least one Hall element) and magnet 16 (being positioned at sensor 15 rear on opposite, path 10).
When path 10 is through out-of-date, and magnet 16 (is treated according to the concentrated magnetic flux amount in the material portion between groove 11
Detected by sensor 15) generate the magnetic field of change.
Fig. 4 shows an exemplary of the monitoring brake device according to the present invention.
Lid 7 includes and the path 17 of top bar segment 2 opposition, a series of by arc of path 17
Tooth 18 is formed.Sensor element 19 is arranged at the control arm 8 that curved path 17 side is other,
During discharging at brake actuating and brake, tooth 18 passes through when bar 1 rotates.Here,
Sensor element 19 is also arranged to generate according to these a series of teeth 18 and calculate pulse.
The advantage of embodiment described above can be seen in integrated manufacturing technology.Lid 7 is by sheet
Shape metal is through punching, punching press and is bent into.Therefore, for the punching of lid 7 and presser
Can be it is contemplated that or carry to offer with the path 10 of groove 11 in skill (if requiring also have bending)
For the path 17 with tooth 18.
Fig. 5 shows an exemplary of the monitoring brake device according to the present invention,
Wherein relevant with relative motion mobile parts are placed in sensor side.
Control arm 8 includes the arc road with a series of teeth 21 towards top bar segment 2 at an upper portion thereof
Footpath 20.Accordingly, sensor element 22 must be attached directly to shell 4 with sleep mode or be attached to
The lid 7 of the shell 4 of bar 1.During brake actuating and brake discharge, as soon as 1 turn of bar
Dynamic, sensor element 22 just skims over the static path 20 of control arm 8.
In the present embodiment, path 20 or integral with control arm 8, or can be made into
Discrete arch-shaped elements to control arm 8 to be attached.This element also can be by sheet metal through punching and punching
It is pressed into, and can be soldered or link to control arm 9.
Fig. 6 shows an exemplary of the monitoring brake device according to the present invention,
The path wherein repeating to change for physical characteristic is provided as discrete component.
The plate 23 being made up of sheet metal is rotatably fixed with respect to the neck to the actuating for S-cam axle
Camshaft (actuating camshaft) 24, with when brake actuating and brake discharge with
Bar 1 rotates.
Plate 23 includes the path 25 with a series of teeth 26.Accordingly, sensor element 27 is attached
To control arm 8.
Fig. 7 shows an embodiment of the monitoring brake device according to the present invention, its with
An alternative arrangements in the path of change is repeated for physical characteristic.
The path 28 of a series of teeth 29 with discrete plate 23 includes irregularly becoming at ad-hoc location
Changing 30, this irregularly changes the tooth corresponding to double width.
The position of the tooth 30 of ultra-wide limits in advance, and determines the position along path 28,
Rotation at this position bar 1 reaches (such as to damage about liner for brake actuating or release stroke
Consumption) marginal value.
When this feature is in time being combined according to the arrangement of Fig. 6, and the tooth 30 of ultra-wide determines for liner
The position of the marginal value of loss.
Accordingly, irregular tooth 30 will provide the pulse of a varying strength so that control unit
Recognize and arrive this critical localisation and require service action immediately.
In fig. 8, show in section a disk brake as an example, as existing
Have in technology known.
This disk brake includes actuating mechanism, As be well known in the art, is included in clamp
The thrust component 31 guided displaceably in 32, Brake pad 33 is pushed to by thrust component 31
Brake disc (not shown) is to realize brake engagement.Thrust component 31 is activated by bar 34, bar 34
It is rotatably supported in the rear end of clamp 32.
According to the present invention, as the most appreciable, bar 34 (that is, is parallel in its side
The direction of rotation of bar 34) include repeating the curved path 35 of change.These repeat change can be by shape
Becoming the indenture 36 on bar 34 surface, these indentures can be formed in the casting process of Forging Technology.
Sensor element 37 is arranged at by being in the opening of correspondence position in the shell of clamp 32,
Thus when brake actuating or brake discharge, path 35 is along the sensing of sensor element 37
Device head 38 is advanced.And in this embodiment, sensor element 37 is generally within this brake disc
Neighbouring opposite, hot compact district.
Claims (29)
1. monitoring brake device, indicates the thrust component of brake actuators for detection
(31) actuator stroke and/or the value of release stroke, described thrust component (31) is by described system
The bar (1 of dynamic device actuating mechanism；34) rotary-actuated, described monitoring brake device includes using
Sensor in the change of at least one of physical characteristic sensing described brake actuators
(12；19；22；27；37), the most described sensor (12；19；22；27；37)
It is arranged so that by described brake actuating with the described part of described brake actuators
The described part of mechanism and described sensor (12；19；22；27；37) the relative fortune between
Move and sense the path (10 along described relative motion；17；20；28；35) described thing
That manages characteristic repeats change, it is characterised in that physical characteristic repeats the described path (10 of change；
17；20；28；35) along described bar (1；34) with one of neighbouring stationary part of described bar
And formed.
Monitoring brake device the most according to claim 1, wherein becomes for described repetition
The described physical characteristic changed is selected from: magnetic field, resistance, electric capacity, inductance and/or surface texture.
3. according to the monitoring brake device one of claim 1 to 2 Suo Shu, wherein said road
Footpath (10；17；20；28；35) include geometry repeats change.
Monitoring brake device the most according to claim 3, wherein said geometry
Repeat to change and formed by depression (11).
Monitoring brake device the most according to claim 3, wherein said geometry
Repeat change by a series of teeth (18；21；26；29) formed.
6. according to the monitoring brake device described in claim 4 or 5, at least one of which magnetic
Body (16) be arranged at described repeat change near, think described repeat change produce change
Magnetic field intensity.
Monitoring brake device the most according to claim 1 and 2, wherein said path
(10；17；20；28；35) a series of permanent magnet is included.
Monitoring brake device the most according to claim 1 and 2, wherein said repetition becomes
Change and be arranged at described bar (1；34) on, and described sensor (12；19；22；27；37)
It is arranged at described bar (1；34) in neighbouring described stationary part.
Monitoring brake device the most according to claim 1 and 2, wherein said repetition becomes
Change and be arranged at described bar (1；34) in neighbouring described stationary part, and described sensor (12；
19；22；27；37) it is arranged at described bar (1；34) on.
Monitoring brake device the most according to claim 8, wherein said repetition changes
With described bar (1；34) it is integrally formed.
11. monitoring brake devices according to claim 9, wherein said repetition changes
With with described bar (1；34) neighbouring described stationary part is integrally formed.
12. monitoring brake devices according to claim 8, wherein said repetition changes
Formed by discrete component, described discrete component bar to be attached to described (1；34).
13. monitoring brake devices according to claim 9, wherein said repetition changes
Being formed by discrete component, described discrete component is to be attached to described bar (1；34) neighbouring institute
State stationary part.
14. monitoring brake devices according to claim 1 and 2, wherein with described bar
(1；34) neighbouring described stationary part is a part for self-contained type's brake lever assembly, clamp (32)
A part or the part of undercarriage portion (9) for vehicle.
15. monitoring brake devices according to claim 1 and 2, wherein said repetition
The described path (10 of change；17；20；28；35) include that at least one adds irregular
Change (30), for determining described actuator stroke and/or the particular location of described release stroke.
16. monitoring brake devices according to claim 1 and 2, wherein said path
(10；17；20；28；35) it is curved path.
17. drum brakes, supervise including according to the brake one of claim 1 to 16 Suo Shu
Survey device.
18. drum brakes according to claim 17, described drum brake includes:
Bar, with shell (4), described shell is for accommodating the actuator mechanism (5) being connected with S-cam axle；
And control arm (8), for described actuator mechanism (5)；It is characterized in that, described road
Footpath (10；17) lid (7) that the free end with described bar of described shell (4) opposes it is arranged at
On, and described sensor (12；19) described control arm (8) it is attached to.
19. drum brakes according to claim 17, described drum brake includes:
Bar, with shell (4), described shell is for accommodating the actuator mechanism (5) being connected with S-cam axle；
And control arm (8), for described actuator mechanism (5)；It is characterized in that, described road
Footpath (20) is arranged on described control arm (8), and described sensor (22) is attached to institute
State the lid (7) of shell (4).
20. control arms, the brake for drum brake according to claim 17 causes
The actuator mechanism of motivation structure, described control arm (8) includes that physical characteristic repeats the path of change
(10；17).
21. control arms according to claim 20, wherein said control arm (8) is by sheet
Shape metal is made, and wherein said repetition changes the depression (11) by with described sheet metal one
Or a series of tooth (18) is formed.
22. lids, for the brake actuating of drum brake according to claim 17
The shell of the bar of mechanism, described lid (7) includes that physical characteristic repeats the path (10 of change；17).
23. lids according to claim 22, wherein said lid (7) is by lamellar gold
Genus is made, and wherein said repeat change by with described sheet metal one depression (11) or
A series of teeth (18) are formed.
24. brake actuators being used for drum brake according to claim 17
Bar, including: shell (4), for accommodating the actuator mechanism (5) being connected with S-cam axle；
And control arm (8), for described actuator mechanism (5)；It is characterized in that, described bar
The path (10 of change is repeated including physical characteristic；, or the lid (7) of described shell (4) 17)
The described path (10 of change is repeated including physical characteristic；, or described control arm (8) 17)
The described path (20) of change is repeated including physical characteristic.
25. disk brakes, supervise including according to the brake one of claim 1 to 16 Suo Shu
Survey device.
26. disk brakes according to claim 25, described disk brake includes band
There is the brake actuators of bar, it is characterised in that described repeat change and be arranged at described bar
Side surface on.
27. brake actuators being used for disk brake according to claim 25
Bar, it is characterised in that described bar includes that physical characteristic repeats the path (35) of change.
28. bars according to claim 27, wherein said repeat change and are arranged at described
On the side surface of bar.
29. bars according to claim 28, wherein bar is made up of cast iron or forged steel, and institute
State repeat to change be formed with described cast iron or with the indenture (36) of described forged steel one.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2010/007192 WO2012069068A1 (en) | 2010-11-26 | 2010-11-26 | Brake monitoring device and components associated therewith |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103313890A CN103313890A (en) | 2013-09-18 |
| CN103313890B true CN103313890B (en) | 2016-10-12 |
Family
ID=43543746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080071113.0A Expired - Fee Related CN103313890B (en) | 2010-11-26 | 2010-11-26 | Monitoring brake device and parts associated with it |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20130255366A1 (en) |
| EP (1) | EP2643197B1 (en) |
| CN (1) | CN103313890B (en) |
| WO (1) | WO2012069068A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202012001863U1 (en) * | 2012-02-22 | 2012-03-19 | Haldex Brake Products Ab | Disc brake and sensor device for this |
| US9371876B2 (en) * | 2014-02-17 | 2016-06-21 | Universal City Studios Llc | Systems and methods for brake systems with engagement sensing |
| US10197123B2 (en) * | 2016-08-04 | 2019-02-05 | Tse Brakes, Inc. | Vehicle braking systems with automatic slack adjusters |
| CN106441932B (en) * | 2016-09-18 | 2019-01-04 | 洛阳西苑车辆与动力检验所有限公司 | Vehicle disc brake press fitting and Detecting data and its test method |
| US11066051B2 (en) * | 2018-10-23 | 2021-07-20 | Dexter Axle Company | Wheel sensors within vehicular brake assemblies |
| US10889275B2 (en) * | 2018-10-23 | 2021-01-12 | Dexter Axle Company | Wheel sensors within vehicular brake assemblies |
| EP3725723A1 (en) * | 2019-04-15 | 2020-10-21 | Otis Elevator Company | Brake lining monitoring system |
| CN110469606B (en) * | 2019-07-16 | 2021-06-29 | 济南金麒麟刹车系统有限公司 | Drum type heavy piece abrasion monitoring sensor, alarm system and abrasion monitoring method thereof |
| US11267446B2 (en) * | 2019-11-04 | 2022-03-08 | Richard W. Job | Trailer braking system |
| CN113623344B (en) * | 2020-05-09 | 2023-02-21 | 威伯科印度有限公司 | Automatic slack adjuster, brake system and wheel set for vehicle |
| EP4094972A4 (en) * | 2021-04-01 | 2023-07-12 | Keun Ho Park | Braking operation system for electric vehicle |
| US20230097070A1 (en) * | 2021-09-24 | 2023-03-30 | Wabco India Limited | Automatic slack adjuster for braking systems of automotive vehicles, braking system and corresponding wheels |
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- 2010-11-26 WO PCT/EP2010/007192 patent/WO2012069068A1/en active Application Filing
- 2010-11-26 CN CN201080071113.0A patent/CN103313890B/en not_active Expired - Fee Related
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2013
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| US5450930A (en) * | 1993-12-09 | 1995-09-19 | Mgm Brakes | Heavy duty electronic brake stroke indicator |
| CN1187236A (en) * | 1995-06-08 | 1998-07-08 | 哈尔德克斯制动产品股份公司 | Brake lining wear indicating device |
| US6352137B1 (en) * | 2000-03-22 | 2002-03-05 | Indian Head Industries, Inc. | Brake monitoring system |
| CN1444046A (en) * | 2002-03-08 | 2003-09-24 | Ntn株式会社 | Rotary detector and anti-brake device of lock using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103313890A (en) | 2013-09-18 |
| EP2643197A1 (en) | 2013-10-02 |
| US20130255366A1 (en) | 2013-10-03 |
| EP2643197B1 (en) | 2020-01-08 |
| WO2012069068A1 (en) | 2012-05-31 |
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